EG4 Powerpro charge from Golf cart charger?

I've got an Allied Battery conversion for one of my golf carts, and it's got a charger with an Open Circuit Voltage of 58.73 volts and a current limit of 14.7 amps.

I've just started unpacking my (six) EG4 PowerPro WallMount Outdoor batteries, and starting to figure out how to connect them in parallel. The first one is 55%, left the factory at 52.89V, the BMS reads 52.78V, and my DVM reads 52.71V

I've seen warnings not to connect them unless the battery voltages match within some fraction of a volt, to prevent large currents. I can't find that any more, anyone know what that number is?

Can I use the above battery charger to charge all the batteries up to the same voltage? Can I just connect each battery for a day and figure it'll be fully charged? The battery specs say:
and the module OVP is 60V, so how bad is 58.73?

I mean, it probably makes sense to just put a few amp-hours into the lowest battery until they all match within a fraction of a volt, and then put them all in parallel, but though I don't want to do anything wrong it's easier to plug in each battery for 9+ hours and call it done (assuming 55% charge). The charger has a maximum rate of 0.0525C on these batteries, so there's no danger of damaging them, is there?

I have a couple of ChargeVerterGCs on order, but they missed the last boat, so I may not see them for a few months.

I could also use a golf cart battery load tester to draw a few amp-hours out of the highest battery, assuming there's a smaller number of those...

Thanks in advance for any hints!

58.73v is bad for 16s LiFePO4 battery - 3.67v per cell, assuming balanced cells. Above the 3.65v max.

Charge using the inverter.

You could use it, if you are really careful. Watch the voltage like a hawk, and stop charging when the charge voltage rises to 55.0v.